Shifting by engine sound!!

Discussion in 'Questions From New Drivers' started by moloko, Jul 3, 2013.

  1. moloko

    moloko Road Train Member

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    I got this down not too long ago, but I'm wondering if any veteran truckers can give some clarity.

    If you're a really good driver, you shift by engine sound. It's safer because you're not looking at the tachometer and you're focused on the road.

    How exactly would you describe the sound an engine makes when it is time to upshift? In my experience the engine starts to sound a bit 'overworked' and starts making some kind of roaring sound that does not sound so smooth, and up-shifting will switch gears (and thus that 'roaring' sound goes away until its time to shift up to the next gear)

    What about down-shifting?
     
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  3. brsims

    brsims Road Train Member

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    I was taught to shift by the engine, rather than a set tach reading, when I first learned how to drive a standard transmission. Heck, my first stick didn't even have a tachometer! The same skill set transitioned over to big trucks with no problems. Grab a gear when the engine sounds to high (taching up), drop a gear when the engine is about to lug (tach low), and enjoy the ride!
     
  4. Casual Trucker

    Casual Trucker Medium Load Member

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    shifting gears varies from engine to engine and it depends on your trans-rear end ratio's and also on the truck weight having said that the only way i know how to explain this to you is no mater what truck you are driving Listen..Listen..Listen to the engine every time you shift and you will master it. It is the 6th scene you will develop as you gain more and more experience. Can I teach you how to play judo, karate, kung ## over a few months? Hell no it just takes time the longer you do Wax on Wax Off the easier it gets....So Listen to the engine to your engine in the same way you listen to your girl friend when you wana get laid it is all up to how well you LISTEN... Listen...and always be gentle but firm when shifting gears

    Her is a smooth shifting instructor that know what the hell he is talking a bout

    [video=youtube_share;_LpnL-RLJrc]http://youtu.be/_LpnL-RLJrc[/video]
     
  5. coastie

    coastie Road Train Member

    As you drive you will figure it out. Listen to the engine as your changing gear via tach, I even went across country guessing my speed by the sound of the engine on the truck I had leased. Speedometer worked and did not work at times. And I must say I did fairly good, went through a speed Trap and did not get nabbed. But went from Il to Portland Or not knowing my true speed and never got a ticket just from the sound of the engine. Just have to know your truck
     
  6. laytonrock

    laytonrock Light Load Member

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    with expieriance using the tach and listening to the moter [not the radio] one can learn thier moter and instincly operate by sound alone. i would learn progressive shifting this way, to use the lower power band and maximize fuel economy. once you have this mastered a person could glance at tach to reaffirm your guess on rpm's. keeping eyes on the road is a great side bonus of this style of driving. happy trails
     
  7. heavyhaulerss

    heavyhaulerss Road Train Member

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    uphill, down hill, up shift, downshift, weight, e.t.c. sometimes you can shift progressively, some times if you try you will lug the engine. on some engines the rpm's drop, fast, some drop a lot slower. just have to get used to your engine sound. reving high is better than lugging. 2 weeks ago I was in a new area. from a stop light making a rt turn, I had a steep hill to climb. it was one of those hills that I could not tell just how steep it was. reved up to 1700 got the next gear & lugged it down & out of 1150 to the next gear reved to 1750 & lugged it again. I was mad at myself. with my weight I should of stayed in the gear that I was in until I topped the hill, which was only about 500 ft. in my detroit. anything under 1300 feels like it's lugging, under 1200 7 it is definitely lugging. just one of those days, where I felt like a rookie.
     
    Last edited: Jul 3, 2013
  8. heavyhaulerss

    heavyhaulerss Road Train Member

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    I will say it was dark out & is why I had not known just how steep the grade was.
     
  9. thelushlarry

    thelushlarry Road Train Member

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    I wish I knew as much as you guys! You do not need a tach or clutch I guess truck makers are just wasting money putting them in trucks!:biggrin_25513:
     
  10. laytonrock

    laytonrock Light Load Member

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    sometimes you need all the horses.....happy trails
     
  11. heavyhaulerss

    heavyhaulerss Road Train Member

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    O.K. :roll:
     
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